Packing material for fragile articles



Jan. 39, 1934 w. D. con. ET AL 1,945@24 PACKING MATERIAL FOR FRAGILEARTICLES Filed April 21, 1930 2 She ets-Sheet l ATTORNEYS Jan. 30, 1934.W 11 E A. 1,94w4

PACKING MATERIAL FOR FRAGILE ARTICLES Filed April 2]., 1930 2Sheets-Sheet 2 ATTORNEYS Patented Jan, 3Q), 1%34 T @FFEQE PACKINGMATIERHAL FUR FRAGKLE ARTIIKHLES William ll). Ccil, Muncie, and William.l'. Dc

Reamer, Crown Point,

Ind, assignors to Mapes Consolidated Manufacturing Company, Griiifith,End, a corporation of Delaware Application April 21, 1930. Serial No.445,909

3 Claims.

This invention relates to packing material-for fragile articles, it moreparticularly relating to material which is in the form of a sheet orboard.

An object of the invention is to provide a packing sheet or board whichcan be economically and effectively made of pulp material such as paperpulp.

A further object of the invention is to provide a packing sheet or boardso molded from pulp that it will not only possess the necessarystiffness but will also be of a resilient or springy character so as tomore effectively protect the fragile articles packed therewith.

Other objects of our invention will appear from the accompanyingdescription and statement of advantages.

In the accompanying drawings:

Fig. 1 isa view of one side of a portion of one form of a packing sheetor board constructed in accordance with our invention.

Fig. 2 is a view of a portion of the opposite side of the same.

Fig. 3 is a'section on the line 3-3 of Fig. 1.

Fig. 4 is a section on the line H of Fig. 1.

Fig. 5 is a top plan of a slightly modified form.

Fig. 6 is a view of one side of a portion of another modified form ofpacking board.

Fig. 7 is a view of a portion of the opposite side.

Fig. 8 is a section on the line 8-8 of Fig. 6.

Fig. 9 is a section-on the line 9-9 of Fig. 6.

- Referring first to Figs. 1 to e inclusive there is shown a packingboard molded from pulp, preferably paper pulp, which is provided withprotuberances on each side thereof to lend thereto the necessarystifiness. The board is so molded that the protuberances on one sidethereof appear as two series of diagonally-extending parallel ribs whichintersect each other at right angles, one series of these ribs beingrepresented at 1 and the other series at 2. On the opposite side of theboard these protuberances are in the form of equally-spaced projections3.

In Fig. 5 the same form of protuberance is shown with the exception thatthe ribs extend at right-angles to the sides of the board instead ofdiagonally, 1 representing one series of ribs and 2' the other series.

In the modified form of board shown in Figs. 6 to 9 inclusive, theprotuberancesnn one side of the board are in the form of a series ofribs 4. placed in the shape of squares, the sides of each square beingconnected by two series of parallel ribs 5 and 6 which intersect eachother at right angles. The protuberances on the opposite side of theboard will be in the form of two series of ((03. Her-54) parallel andintersecting ribs '7 and 8 which separate the squares and also a seriesof protuberances 9.

These sheets of board are molded on any suit- I able molding machine,such for instance as the one shown and described in patent to Pruyn and-De Reamer No. 1,211,229, with the mold surfaces altered to give thedesired conformation to the finished product.

A packing board or sheet thus formed not only possesses the requiredstiffness for the purpose but also is of a resilient character whichacts to more fully protect any fragile articles packed therewith, theribs and projections giving under pressure but springing back to theiroriginal character when pressure is removed so as to cause the packingto more closely hug the articles packed therewith. This lattercharacteristic is due to the pulp material from which the boards areformed, the pulp having an inherent resiliency or tendency to give underpressure but spring back to its original form as the pressure isrelieved and thus acts as a cushion instead of presenting a surfacewhich either is unyielding under normal pressure or which is broken orcrushed under an abnormal pressure, as is the case with the well knownform of corrugated packing board.

Having thus described our invention, we claim:

1. A packing board formed of moulded pulp, said board having a pluralityof spaced resilient ribs on one side thereof and a plurality of spacedresilient projections on the opposite side thereof, said ribs beingformed in two series with the ribs of one series extending at an angleto the ribs of the other series.

2. A packing board formed of moulded pulp, such board having a pluralityof resilient ribs on at least one side thereof, said ribs being formedin two series with the ribs of one series extending at an angle to theribs of the other series.

3. A packing board formed of moulded pulp, said board having a pluralityof spaced resilient ribs on one side thereof, certain, of said ribscrossing the other ribs at an angle, and a plurality of spaced resilientprojections on the opposite side of said board formed from the materiallying between said ribs.

WILLIAM D. 00E. WILLIAM J. DE REAMER.

